Yamada sensei

she's the teacher if a class called 7G (7th grade) she can be really sarcastic, byt knows when to be strict at the right time, she often teases her students, sometimes they can annoy her, making her not want to teach them at some days. she can raise her voice whenever shes annoyed, but overall shes very sarcastic and teasing. her height is 187cm (6"5) and her age is 20